1,720,958 research outputs found
Criteri di approccio alla valutazione e gestione del rischio
No full textConvegno in Apicoltura – corso di formazione per la prevenzione dei rischi in apicoltura , Coldiretti, Asti, 28 marzo 201
Correct and Effective Characterization of Fire-arms Noise:a Basic Aspect to Provide Reliable Input Data for the Reduction of Emitted Noise from Shooting Ranges in Urbanized Area
No full textA large number of noise sources in urbanized areas involve health impairment risk or important annoyance, and characterization and control techniques have been developed to improve the safety and wellbeing of dwellers. But there is a large variety of gun shots due to both the gun and the used
cartridges, and it is almost impossible to dictate a general rule to manage in detail this topic. A clear example of this situations is represented by a shooting range, a limited and well defined installation in which shooting activities are practiced. The shooting ranges, which were since a long time usually located in former military facilities, are nowadays in proximity of densely dwelled areas, due to the recent impressive urbanization rate. Hence, this situation makes necessary that a number of shooting ranges must nowadays accomplish the urban noise classifications. The situation appears to be quite complex in Italy since the national regulations for the measurement and management of the
environmental noise problems associated with the activity of shooting ranges appear to be somehow not exhaustive, this involving administrative and legal problems. The source simulation methods (e.g. continuous pink or white noise) and the propagation models upon which the common computer
assisted techniques are usually based can reduce to a large extent the quality of the control measures, due to poor prediction of the emitted sound power and estimates of the noise propagation pattern
La analisi approfondita degli eventi infortunistici quale essenziale strumento di prevenzione: un protocollo di indagine post-evento messo a punto a supporto dell'attività degli analisti
No full textHigh Speed and Flexible Network Processing
Full text linkPacket filter technologies are facing new issues every day, as we had to re-engineer our computer networks in order to accommodate many new use cases. For instance, low-level network protocols are growing in number: new solutions, arising in particular for the purpose of network virtualization (e.g., 802QinQ, VXLAN), are rapidly transforming the Ethernet frames. The middle layers of the protocol stack are facing a similar metamorphosis: examples include the widespread adoption of Virtual Private Networks, or the necessity to transport IPv6 traffic over IPv4 networks. Packet filters are dramatically affected by those changes, as they become more complicated: it is important to be able to capture all the traffic we are interested in (e.g., web traffic), independently from the actual encapsulation used at lower layers. For this reason, the scientific research should embrace these new issues by proposing improvements over the traditional technologies, with the goal of maintaining the standards of efficiency of flexibility that we are used to. This dissertation addresses two specific issues: 1. How to preserve packet filter flexibility when specifying packet matching rules. We need a solution that allows a finer specification of matching rules, but that is also independent (if desired) on the specific encapsulation used at lower levels; moreover, the solution should support protocol definitions specified at run-time. Part I addresses the problem and describes in detail the proposed solution: NetPFL, a declarative language targeted to data-plane packet processing. 2. How to achieve efficiency when representing and combining multiple packet filters, even in case of bizarre and unusual network encapsulations. Part II outlines the issue and proposes two solutions: pFSA (described in Chapter 2) and its extension, xpFSA (delineated in Chapter 3
SVILUPPO E RISULTATI DI UNA METODICA COMPUTER ASSISTITA PER L'ANALISI APPROFONDITA DI EVENTI INFORTUNISTICI LAVORO CORRELATI
Full text linkIn Italia si deve tutt'ora registrare un elevato numero di eventi mortali lavoro correlati, per la stragrande maggioranza in contesti non ascrivibili a scenari di incidente rilevante, e raramente associabili a guasto di impianti ed attrezzature correttamente scelti, usati e mantenuti. Un approccio efficace di prevenzione non può che fare riferimento all'analisi dei dati storici, ad integrazione della quale occorre peraltro disporre di una metodica di analisi della catena di eventi casuali dell'incidente formalizzata e priva di deviazioni valutative soggettive. Il modello originale di cui si riferisce si fonda su casi caratterizzati da informazioni approfondite acquisite in ambito di accertamenti tecnici a fini di giustizia. Esso si propone come valido riferimento nelle valutazioni sino alle cause prime dell'evento, lungo tutta la catena incidentale, e consente la revisione critica della valutazione e gestione proattiva dei rischi
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
- …
